@article{9352,
  author = {W. Kauppila and W. Ott and W. Fite},
  title = {Excitation of Atomic Hydrogen to the Metastable 2^2S1/2 State by Electron Impact},
  year = {1970},
  journal = {Physical Review A},
  volume = {1},
  pages = {1099-1108},
  month = {Jan-04-1970},
  issn = {0556-2791},
  url = {http://link.aps.org/doi/10.1103/PhysRevA.1.1099},
  doi = {10.1103/PhysRevA.1.1099},
}